When different cultures, we often pay attention only to the differences without noticing the similarities.
A. pared
B. being pared
C. to pare
D. paring
网友回答
A. pared
B. being pared
C. to pare
(答案→)D. paring
解析：考查时间状语从句，当主从句的主语一致时可以省略从句的主语和be动词，when pared=when we are paring….，句意：当比较不同的文化时，我们经常只注意不同没注意相似处。选D。